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As long as you have access to this mailbox do the following..<br />
- login to OWA (using your account)<br />
- In the Top Right Corner, (Where you name is) <br />
- There is a little drop down arrow, click that <br />
- It will open a windows to Open Other Mailbox<br />
- Type in the Discover Search Mailbox in there and it will open <br />
<br />
provided that you have the appropriate permissions. <br />
<br />
Will.
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As long as you have access to this mailbox do the following..
- login to OWA (using your account)
- In the Top Right Corner, (Where you name is)
- There is a little drop down arrow, click that
- It will open a windows to Open Other Mailbox
- Type in the Discover Search Mailbox in there and it will open

provided that you have the appropriate permissions.

Will.

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Hey there, I have an exchange 2010-2013 migration going on and I am at the tail end and found that I did not migrate the DiscoverySearchMailbox yet, and it is 50GB in size. &nbsp;<br />
My user account was able to open it back when it was all on the 2010 exchange, but I cannot seem to open it through OWA since most all is over on the 2013 server now.<br />
<br />
I want to reduce the size before moving so I thought I would log into it and get rid of the searched and logs to slim it down. <br />
<br />
Is there another way to do this, or how can I log into it now with the above described scenario<br />
<br />
Thanks
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Hey there, I have an exchange 2010-2013 migration going on and I am at the tail end and found that I did not migrate the DiscoverySearchMailbox yet, and it is 50GB in size.  
My user account was able to open it back when it was all on the 2010 exchange, but I cannot seem to open it through OWA since most all is over on the 2013 server now.

I want to reduce the size before moving so I thought I would log into it and get rid of the searched and logs to slim it down. 

Is there another way to do this, or how can I log into it now with the above described scenario

Thanks

How to open discovery search mailbox

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.